Home / 89,218.48-122,812.44-77,113.40

Finding the Fourth Proportional to 89,218.48, 122,812.44 and 77,113.40

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Solution

The fourth proportional to 89,218.48, 122,812.44 and 77,113.40 is: 106,149.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,218.48 : 122,812.44 = 77,113.40 : x
  2. Step 2: Convert to fraction form
    89,218.48/122,812.44 = 77,113.40/x
  3. Step 3: Cross multiply
    89,218.48x = 122,812.44 × 77,113.40
  4. Step 4: Simplify right side
    89,218.48x = 9,470,484,810.70
  5. Step 5: Solve for x
    x = 9,470,484,810.70/89,218.48
  6. Step 6: Final answer
    x = 106,149.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.